Photo Credits      Terms And Conditions    Contact Us     1840 Austin Road  · Troy, MI 48083 ·  Phone: (248) 689-9700 ·  Fax: (248) 689-0281 Quality Policy Equitable Engineering Company's mission is to improve on a continuing basis our products and services to meet or exceed our customer's requirements. Unique Capabilities All test equipment is certified traceable to the N.I.S.T. Offices for Government and Source Inspectors are Maintained   Curvic Couplings®  Customers Part Numbers Equipment List A leader in the precision gear, spline, and curvic coupling® market for nearly 60 years.